ayttm

http://ayttm.sourceforge.net/
'ayttm' is designed to become a Universal Instant Messaging client which will integrate all existing IM clients and provide a single consistent user interface. Currently, 'ayttm' supports sending and receiving messages in AIM, ICQ, Yahoo! Messenger, MSN, and Jabber. It also has file transfer between 'ayttm' users, and between users of 'ayttm' and users of the official MSN and Yahoo! clients. The project was formerly know as 'EveryBuddy.'

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